I'm torn between preferring this (13x28+1) or a Coptic/Ethiopian calendar (12*30+5). Having each week start on the same day of the week is nice, but 12 months

I'm torn between preferring this (13x28+1) or a Coptic/Ethiopian calendar (12*30+5). Having each week start on the same day of the week is nice, but 12 months has advantages, too, and at least the first day of each month is consistent from year to year.